What is the minimum altitude that is prescribed for off airway IFR flights over mountainous terrain?

1,000 feet
The AMA is the lowest off-airway altitude to be used under instrument meteorological conditions (IMC) that will provide a minimum vertical clearance of 1,000 feet (AGL), or in designated mountainous terrain 2,000 feet above all obstacles located in the area specified, rounded up to the nearest 100 foot increment.

What does minimum enroute altitude guarantee?

Minimum en route altitude (MEA), alternately spelled as Minimum enroute altitude, is the lowest published altitude between radio navigation fixes that assures acceptable navigational signal coverage (see MRA) and meets obstacle clearance requirements (see MOCA) between those fixes.

What is minimum safe altitude MSA for IFR conditions?

The Minimum Sector Altitude (MSA) is the lowest altitude which may be used which will provide a minimum clearance of 300 m (1 000 ft) above all objects located in the area contained within a sector of a circle of 46km (25 NM) radius centered on a radio navigation aid.

What is the minimum altitude for IFR operations when on a direct or unpublished route?

When operating under IFR, between the surface and an altitude of Flight Level (FL) 290, no aircraft should come closer vertically than 1,000 feet.

What is Area minimum altitude?

Area minimum altitude (AMA), sometimes referred to as minimum off-route altitude (MORA) provides minimum obstacle clearance above all obstacles in the area. Normally this means 2000 ft over high terrain or in mountainous areas and 1000 ft otherwise but different figures can be specified by the competent authority.

What is the purpose of the off-Route obstruction clearance altitude Oroca?

An off-route obstruction clearance altitude (OROCA) is an off-route altitude that provides obstruction clearance with a 1,000-foot buffer in non- mountainous terrain areas and a 2,000-foot buffer in designated mountainous areas within the United States.

How do you find the minimum safe altitude?

On the main menu, click Customize > Production > Production Properties. The Production Properties dialog box appears. Click Aviation Properties in the list on the left side of the Production Properties dialog box. Click cell next to Minimum Safe Altitude and click the ellipsis (…) that appears.

What is the minimum safe altitude over a congested area?

Here’s the verbatim language of 91.119(b): “Over any congested area of a city, town, or settlement, or over any open air assembly of persons, an altitude of 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet of the aircraft.”

What is the purpose of the off Route obstruction clearance altitude Oroca?

What is minimum IFR altitude?

minimum IFR altitude (MIA) The lowest IFR (instrument flight rules) altitude established for use in a specific airspace. The minimum IFR altitude provides obstacle clearance but may or may not be within controlled airspace. Minimum altitudes are published on aeronautical charts.

What is the lowest IFR altitude?

minimum IFR altitude (MIA)

  • i. In a designated mountainous area, 2000 ft above the highest obstacle within a horizontal distance of 5 statute miles from the course to be flown.
  • ii. In other than mountainous areas, 1000 ft above the highest obstacle within 5 statute miles from the course to be flown.
  • iii.

What is an off route obstruction clearance altitude?

An off-route obstruction clearance altitude (OROCA) is an off-route altitude that provides obstruction clearance with a 1,000-foot buffer in non- mountainous terrain areas and a 2,000-foot buffer in designated mountainous areas within the United States.

How many feet of clearance does an oroca need?

The OROCA provides 1000 feet obstacle clearance in non-mountainous areas and 2000 feet clearance in mountainous areas. However, the 2012 FAA Instrument Procedures Handbook states (excerpt below) in a another sentence that OROCAs do not provide acceptable terrain clearance.

Why are orocas not shown on en route charts?

OROCAs depicted on en route charts do not provide the pilot with an acceptable altitude for terrain and obstruction clearance for the purposes of off-route, random RNAV direct flights in either controlled or uncontrolled airspace.

Can a oroca be used on an RNAV flight?

“OROCAs depicted on en route charts do not provide the pilot with an acceptable altitude for terrain and obstruction clearance for the purposes of off-route, random RNAV direct flights in either controlled or uncontrolled airspace.” Ace Any FAA Written Test! Fast, efficient study. Pass Your Checkride With Confidence!